Method for increasing the internal bulk of wet-pressed tissue
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United States of America Patent
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Apr 23, 1996
Issued Date -
N/A
app pub date -
Sep 14, 1994
filing date -
May 21, 1993
priority date (Note) -
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Abstract
The internal bulk of a tissue web can be improved during manufacturing of the basesheet by subjecting the tissue web to differential pressure while supported on a coarse fabric at a consistency of about 30 percent or greater. The differential pressure, such as by applying vacuum suction to the underside of the coarse fabric, causes the wet web to deflect into the openings or depressions in the fabric and 'pop' back, resulting in a substantial gain in thickness or internal bulk. The method is especially adapted to improve the internal bulk of wet-pressed tissue webs.
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